Answer:
Guanine.
Explanation:
DNA is present as genetic material of all the organism.DNA is made of the four different nitrogenous bases, pentose deoxyribose sugar and the phosphate group.
DNA is complimentary in nature in which the nitrogenous bases combine specifically with each other. Adenine binds with cytosine with two hydrogen bonds and guanine binds with cytosine with three hydrogen bonds.
Thus, the answer is guanine.
A.
all the DNA strands in the two DNA molecules will have both parental and newly synthesized DNA.
B.
it results in two nonidentical DNA molecules.
C.
each of the two DNA molecules will consist of one parental strand and one newly synthesized strand.
D.
of the two DNA molecules, one is made up totally of parental DNA, while the other is entirely newly synthesized DNA.
E.
one DNA strand is replicated continuously, while the other must be replicated discontinuously.
Giant tortoises
b.
Mosquitoes
c.
Elephants
d.
Redwoods
Answer: The correct answer is- b) Mosquitoes.
R- selected species are those species that can survive in unstable, unpredictable environmental conditions and produce large number of small size offspring. These offspring have low survival rate ( short life span) and do not have any parental care.
These species grow very rapidly and attain reproductive maturity at early stage in their lives.
Example of R- selected species- Insects ( such as mosquitoes), rats.
On the other hand, a) , c), and d) are K selected species. They survive under stable environmental conditions and produce large size offspring with very few number. They have long life span and experience parental care
Mosquitoes are an R-related species.
Further Explanation:
The fitness of a phenotype determines whether it gets naturally selected or not. For a condition where the environment of each year changes and the adaptability of the phenotypes are different for a different environment, the oscillating selection might occur in which different phenotypes are favored at different times and different environmental conditions.
Fitness can be attained by two different approaches, namely:
How much a system can invest in one approach at the cost of others depends on the environment. This type of selection is known as R-K selection. In K-selection, the organism matures slowly and has a long life span. In R-selection, the organism produces many copies of progeny in an unstable environment. Mosquito, mice, and rabbits are an example of R-species.
Some features of R-species are:
Learn more:
Answer Details:
Grade: High School
Subject: Biology
Chapter: Ecology
Keywords:
Environment, year, adaptability, selected, fitness, stability, multiplication, fast, small, weak, short life-span, intelligent, feature, organism, depend.
B.Mutualism
C.Competition